Rolex Datejust 31 Yellow Rolesor — Olive Green Diamond Dial | Ref. 278243

Reference 278243 is one of the most richly appointed expressions within the Datejust 31 collection, combining Yellow Rolesor construction with an olive green dial set with diamonds — a pairing that marries the warmth of 18k yellow gold with a dial colour that has become one of Rolex's most sought-after introductions in recent years. At 31 mm, this reference occupies the mid-size position in the Datejust family, offering a versatile case diameter that suits a wide range of wrist proportions without sacrificing presence.

Calibre 2236 — Rolex's purpose-built movement for mid-size and ladies' references — powers the 278243 with a Syloxi silicon hairspring for enhanced anti-magnetic properties and a 55-hour power reserve. The Yellow Rolesor case pairs an 18k yellow gold bezel and crown with an Oystersteel case body, a combination that has characterised Rolex's two-tone aesthetic since the 1970s. The olive green dial, set with diamond hour markers, demonstrates Rolex's dial-making expertise: the gem-set indices are individually checked for cut, colour, and carat consistency, set into the dial with the precision expected of a manufacture at this level. The Jubilee bracelet, with its five-link construction in matching Rolesor materials, provides a supple and refined wrist feel.

Olive green dials have attracted notable collector enthusiasm since their wider introduction across the Datejust and Submariner families, and the 278243's combination of this colour with diamond setting and two-tone construction positions it as a compelling choice for buyers seeking both aesthetic distinction and investment resilience. Its relatively recent production ensures strong parts availability and modern manufacture standards.